Slitter



Patented May 27, 1930 UNITED STATES PATENT OFFICE FREDERICK W. nonnina,Y OE WORCESTER, MASSACHUSETTS, ASSIGNOR To RICE, RARn TON a TALES, INCORPORATED, OE WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS SLITTER Application led March 18, 1929. Serial No. 347,772.

This invention relates to a slitter capable of general use but particularly adapted for use on paper winding machines.

The principal objects of the invention are to provide slitting knives adapted to be rotated independently of each other at high speed, in combination with a second element for each slitting couple movable back and forth in such a Way as to present a new surface to the paper at all times; to provide a second element of each slitting couple in the form of a sector shaped member; to provide means for oscillating said member about an axis so as to secure the above mentioned constantly changing surface, and to provide a construction in which the slitting segment can be swung around out of Contact with the other member of the slitting couple for threading in the web.

' Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is an end view of a Winding machine provided with a preferred embodiment of this invention with parts shown in section;

Fig. 2 is a similar view in section showing the mechanism for operating the sectorshaped member;

Fig. 3 is an end view taken in the direction of the arrow 3 in Fig. 2; and

Fig. 4 is a plan taken in the direction of the arrow 4 in Fig. 2.

This invention is shown as applied to a well known type of Winding machine in Which the web of paper W comes in over a series of guide and tension rolls to a roll 11 and from there is brought up on one of the winding rolls 12. The paper is wound up in a roll 13 resting on the two winding rolls 12 which are driven from a gear or other wheel 14 in the usual Way. Between the rolls 11 and V12 the web is slit as will appear hereinafter.

From a shaft 15 of the machine by a worm f drive a shaft 16 is driven Which in turn in a sleeve 23 which extends along the'shaft so that only one of the cams 18 has to beremployed to operate a series of these devices which constitute a part of the slitting means.

On each collar 21 is fiXed'a segmental blade 25 which has a flat surface furnishing a eut ting edge and is backed off 'along a surface 26 at each` end inthe form of a cam.v This constitutes one elementof a slitting couple. The

segmental knife is backed off on each end vkto;

provide a slanting surface at each end so as to enable the cutter 35 to be forced back to cutting position grandually When the segment has been swung out for threading and is then brought back to position. The cutter 35 is pressed against this surface by a spring 37. On a stationary shaft is carried an integral track or guide V31 and a series Of carriages 32 are adjustable along this track or pair of ways and fastened to the same in anyjdesired position by screws 33. Each carriage 32 supports a motor 34 on the shaft of which is fixed a sharp Circular slitter 35. Each of these slitters cooperates with one segment 25 to constitute a slitter couple. i f

The motors are carried in ways on ythe carriages 32 and adjusted by screws 36 by which the slitte'rs can be moved toward 'and from the web of paper. Of course, they are located so as to project through it and slit it in the manner shown in Fig. 4. y

It Will be seen that the segments 25 are removable and replaceableand also that` the cutters 35 are all driven separately but they are adjustable in any direction and that the knives are quickly and easily removed for sharpening. lt 'will bejseen lthat the. Operation involves c the constant rotation of the slitting knives 35 on stationary axes at high speed and the oscillation of the segments on a stationary axis. Y

When the paper is to be threaded through the machine the roller 19 has to be disconnected from the cam and the segments :25 turned down so that the upper edge is considerably below the slitters 35 so as to allow the web to beV threaded through as shown in Fig. l. Then with the slitters 35 running the roller V19 is placed in the cam slot again and the machine started up.

Although I have illustrated and described onlya single form of the invention I- am aware of the fact that modifications can be made therein by any person skilled in theart without departing from the scope of the invention Vas expressed in the claims. Therefore, I do not wish to be limited in this revspect but what I claim is l. In a slitting device for a paper winding machine, the combination with a series of circular slitting cutters and means for rotating each one independently at high spe'edLof a sector shaped member located back ofthe web adjacent to each slitting knife and means for oscillating said sector shaped member on its own axis to constantly present new surfaces to the web at all times.

2. 'In a slitting device, the combination with a circular slitting cutter andmeans for rotating it at high speed, of a sector shaped member located back of the web adjacent to lthe slitting cutter and means for oscillating said sector shaped `member onits own axis. f Y

fixed my signature.

FREDERICK W. LODDING.

3. In a slitting device, the combination of a support, a carriage adjustable along the support, means for securing the carriage in any desired position on the support, a motor adjustable transversely on the carriage, a circular slitting knife directly on the shaft of said motor, a stationary shaft parallel with the support, a sleeve on the stationary shaft free to turn thereon, a collar on thesleeve, means for securing the collar to the sleeve, a sector shaped blade adjustably secured to said collar and located at the side o f the slitting knife to support the web, and means for operating said collar constantly when the machine is in operation.' l

4. vIn a slitting device, the combination of a support, a carriage carried by the support, a motor, a circular slitting yknife directly on the shaft of said motor, a stationary shaft parallel with the support, a sleeve on the stationary shaft freeto turn thereon, a collar on the sleeve, means for securing the collar to the sleeve, said collar having' a sector-shaped projection, a sector shaped blade secured to said projection andA located at the side of the slitting' knife, and means for oscil- `lating` said collar. c l' 5. In a web slitting device, the combina- 

